vinüül

Vinüül, also known as vinyl, refers to a family of synthetic polymers derived from vinyl monomers. The most widely produced member is polyvinyl chloride (PVC). Other important vinyl polymers include polyvinyl acetate and polyvinylidene chloride. The term also denotes materials made from these polymers, such as PVC plastics and vinyl fabrics.

Production and structure: Vinyl polymers are formed by polymerizing vinyl monomers, with vinyl chloride monomer (VCM) giving PVC. The polymers can be processed into rigid or flexible forms. Untreated PVC is relatively rigid; adding plasticizers or blending with other polymers yields flexible PVC used in cables, flooring, and coatings.

Properties and safety: Vinyl polymers resist moisture and many chemicals, provide electrical insulation, and are durable. They contain chlorine, and burning PVC releases hydrogen chloride and other toxic gases. Additives such as stabilizers and plasticizers influence properties and environmental impact.

Applications and vinyl records: Rigid PVC is used for pipes, window frames, and profiles; flexible PVC is used in cables, flooring, automotive interiors, and coated fabrics. Vinyl records are discs made from PVC used for analog sound storage.

Environmental considerations: Recycling can be challenging due to additives. Disposal and incineration require controls to manage emissions and chlorine release. Ongoing research seeks safer additives and improved recycling to reduce environmental impact.